Sims 4 Toddler Glitch!!

Why hello there. So, I just updated my Sims 4 game, and tried aging up my baby. It worked fine, but then my toddler immediately aged up into a child. I tried adding via CAS a toddler, and the same thing happened. Any ideas? I already tried repairing my game. Help is appreciated! (I have a mac, by the way - if that helps in any way)